Forum Thread: Wrong APN Settings

What carrier are you using? Each carrier utilizes different APN settings.

AT&T, but I was using different roms and trying them out. Not sure why the APN settings won't pickup anymore.

Were these roms Samsung roms? If you flash incompatible files together that could of caused the issue.

Yeah they were, but I've used custom roms before on my phone.

You might have flashed the wrong CSC file in Odin. If so, try flashing to stock with a stock image file. Download one thats prepackaged in a zip together or use a toolkit to get back to stock. Get back in Download mode, then flash away. Your phone will reboot when completed. It'll be like when you first turned on your phone for the 1st time.

Oh okay, thanks. I'll give that a go.

If all else fails, manually type in the APN settings. Here they are.

Name: AT&T
APN: pta
Proxy:
Port:
Username:
Password:
Server:
MMSC: http://mmsc.mobile.att.net/
MMS Proxy: proxy.mobile.att.net
MMS Port: 80
MCC: 310
MNC: 410
Authentication Type:
APN Type: default,admin,fota,mms,supl,hipri
APN Protocol: IPv4/IPv6
APN Roaming Protocol: IPv4/IPv6